Four-Model Comparison on a Single-File HTML Solar System Prompt

Key Info

A comparison ran the same single-file HTML solar system prompt across four models on OpenRouter to compare speed, cost, and output. Gemini 4 Argon finished fastest at 42 seconds for 3.3¢ and was the author's overall favorite; DeepSeek V4.1 Flash was the cheapest at 0.6¢ in 85 seconds.

Highlights

• Same prompt tested across four models on OpenRouter
• Gemini 4 Argon: fastest at 42s, cost 3.3¢, preferred overall
• DeepSeek V4.1 Flash: cheapest at 0.6¢, took 85s
• Comparison covers speed, cost, and output quality